Mammal Sleep Behavior

Introduction

Sleep Patterns in Mammals
Species	Body Weight1	Brain Weight2	Slow Wave Sleep3	Paradoxical Sleep4	Total Sleep	Maximum Life Span (yrs)
Asian elephant	2547.000	4603.00	2.1	1.8	3.9	69.0
Horse	521.000	655.00	2.1	0.8	2.9	46.0
Cow	465.000	423.00	3.2	0.7	3.9	30.0
Pig	192.000	180.00	6.5	1.9	8.4	27.0
Brazilian tapir	160.000	169.00	5.2	1.0	6.2	30.4
Gray seal	85.000	325.00	4.7	1.5	6.2	41.0
Human	62.000	1320.00	6.1	1.9	8.0	100.0
Sheep	55.500	175.00	3.2	0.6	3.8	20.0
Chimpanzee	52.160	440.00	8.3	1.4	9.7	50.0
Goat	27.660	115.00	3.3	0.5	3.8	20.0
Baboon	10.550	179.50	9.1	0.7	9.8	27.0
Patas monkey	10.000	115.00	10.0	0.9	10.9	20.2
Rhesus monkey	6.800	179.00	8.4	1.2	9.6	29.0
Red fox	4.235	50.40	7.4	2.4	9.8	9.8
Vervet	4.190	58.00	9.7	0.6	10.3	24.0
Nine-banded armadillo	3.500	10.80	14.3	3.1	17.4	6.5
Water opossum	3.500	3.90	12.8	6.6	19.4	3.0
Cat	3.300	25.60	10.9	3.6	14.5	28.0
Echidna	3.000	25.00	8.6	0.0	8.6	50.0
Rabbit	2.500	12.10	7.5	0.9	8.4	18.0
Tree hyrax	2.000	12.30	4.9	0.5	5.4	7.5
N. American opossum	1.700	6.30	13.8	5.6	19.4	5.0
Phanlanger	1.620	11.40	11.9	1.8	13.7	13.0
Guinea pig	1.040	5.50	7.4	0.8	8.2	7.6
African giant pouched rat	1.000	6.60	6.3	2.0	8.3	4.5
Tenrec	0.900	2.60	11.0	2.3	13.3	4.5
European hedgehog	0.785	3.50	6.6	4.1	10.7	6.0
Owl monkey	0.480	15.50	15.2	1.8	17.0	12.0
Chinchilla	0.425	6.40	11.0	1.5	12.5	7.0
Rat	0.280	1.90	10.6	2.6	13.2	4.7
Galago	0.200	5.00	9.5	1.2	10.7	10.4
Golden hamster	0.120	1.00	11.0	3.4	14.4	3.9
Tree shrew	0.104	2.50	13.2	2.6	15.8	2.3
Ground squirrel	0.101	4.00	10.4	3.4	13.8	9.0
Eastern American mole	0.075	1.20	6.3	2.1	8.4	3.5
Musk shrew	0.048	0.33	10.8	2.0	12.8	2.0
Big brown bat	0.023	0.30	15.8	3.9	19.7	19.0
Mouse	0.023	0.40	11.9	1.3	13.2	3.2
Little brown bat	0.010	0.25	17.9	2.0	19.9	24.0
Lesser short-tailed shrew	0.005	0.14	7.7	1.4	9.1	2.6
1 Weight in kilograms 2 Weight in grams 3 Non-dreaming hours per day 4 Dreaming hours per day